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Low cost and long-focal-depth metallic axicon for terahertz frequencies based on parallel-plate-waveguides

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Hernandez-Serrano, Arturo I. and MacPherson, Emma (2021) Low cost and long-focal-depth metallic axicon for terahertz frequencies based on parallel-plate-waveguides. Scientific Reports, 11 . 3005. doi:10.1038/s41598-021-82503-x ISSN 2045-2322.

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Official URL: https://doi.org/10.1038/s41598-021-82503-x

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Abstract

In this work we demonstrate a triangular surface lens (axicon) operating at frequencies between 350 and 450 GHz using parallel-plate-waveguide technology. The proposed axicon offers longer focal depth characteristics compared to conventional plastic lenses, surpassing common TPX lenses by one order of magnitude. Additionally, due to the triangular surface of the axicon, this device is able to focus THz radiation onto smaller areas than TPX lenses, enhancing the resolution characteristics of THz imaging systems. The frequency range of operation of the proposed axicon can be easily tuned by changing the space between plates, making this approach a very attractive candidate for low-cost, robust and easy to assemble solutions for the next generation of active THz devices.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Terahertz spectroscopy , Parallel-plate waveguides , Submillimeter waves
Journal or Publication Title: Scientific Reports
Publisher: Nature Publishing Group
ISSN: 2045-2322
Official Date: 4 February 2021
Dates:
DateEvent
4 February 2021Published
19 January 2021Accepted
Volume: 11
Article Number: 3005
DOI: 10.1038/s41598-021-82503-x
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 25 January 2021
Date of first compliant Open Access: 10 February 2021
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/s021442/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
UNSPECIFIEDRoyal Societyhttp://dx.doi.org/10.13039/501100000288
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